Key Distribution Protocols Based on Noisy Channels in Presence of an Active Adversary: Conventional and New Versions With Parameter Optimization

Yakovlev, V. A.; Korzhik, Valery; Morales‐Luna, Guillermo

doi:10.1109/tit.2008.921689

Cited by 20 publications

(40 citation statements)

References 25 publications

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“…Maurer and Wolf subsequently extended the secretkey sharing analysis of [21] to account for the presence of an active eavesdropper in [179]- [181], and showed that either a secret key can be generated at the same rate as in the passive-adversary case, or such secret-key agreement is infeasible. Refinements to their model that yield larger key rates are shown in [182]. A two-user interference channel with a noiseless, shared feedback channel from the receivers and corresponding bounds on the secret-key capacity region are studied in [183], while the multiple-access channel was examined in [184].…”

Section: Wireless Secret Key Agreementmentioning

confidence: 99%

Principles of Physical Layer Security in Multiuser Wireless Networks: A Survey

Mukherjee

Fakoorian

Huang

et al. 2014

IEEE Commun. Surv. Tutorials

1,251

736

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Abstract-This paper studies a multi-antenna wiretap channel with a passive eavesdropper and an external helper, where only quantized channel information regarding the legitimate receiver is available at the transmitter and helper due to finite-rate feedback. Given a fixed total bandwidth for the two feedback channels, the receiver must determine how to allocate its feedback bits to the transmitter and helper. Assuming zero-forcing transmission at the helper and random vector quantization of the channels, an analytic expression for the achievable ergodic secrecy rate due to the resulting quantization errors is derived. While direct optimization of the secrecy rate is difficult, an approximate upper bound for the mean loss in secrecy rate is derived and a feedback bit allocation method that minimizes the average upper bound on the secrecy rate loss is studied. A closed-form solution is shown to be possible if the integer constraint on the bit allocation is relaxed. Numerical simulations indicate the significant advantage that can be achieved by adaptively allocating the available feedback bits.Index Terms-Cooperative jamming, feedback bits allocation, limited feedback, MISO wiretap channel.

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Section: Wireless Secret Key Agreementmentioning

confidence: 99%

Principles of Physical Layer Security in Multiuser Wireless Networks: A Survey

Mukherjee

Fakoorian

Huang

et al. 2014

IEEE Commun. Surv. Tutorials

1,251

736

View full text Add to dashboard Cite

show abstract

“…We remark that the case of active adversaries (i.e. unauthenticated channels) has been extensively studied in [71,73,93,94,121,122]. However, even in this scenario it is generally assumed that Eve is passive for the initial noisy broadcast, which is again unrealistic.…”

Section: I(x; R) < I(z; R) and I(y ; R) < I(z; R)mentioning

confidence: 99%

Long term confidentiality: a survey

Braun

Buchmann

Mullan

et al. 2012

Des. Codes Cryptogr.

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Abstract. Sensitive electronic data may be required to remain confidential for long periods of time. Yet encryption under a computationally secure cryptosystem cannot provide a guarantee of long term confidentiality, due to potential advances in computing power or cryptanalysis. Long term confidentiality is ensured by information theoretically secure ciphers, but at the expense of impractical key agreement and key management. We overview known methods to alleviate these problems, whilst retaining some form of information theoretic security relevant for long term confidentiality.

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“…Our focus, separate from previous work on active attacks [15,14], is strictly on passive attacks against physical-layer key extraction in which the adversary observes an execution of the key extraction protocol between two parties without interfering. Mathur et al briefly considered a passive adversary (say, Eve) who attempts to derive the same key as Alice and Bob using only her own channel measurements.…”

Section: Related Workmentioning

confidence: 99%

On passive inference attacks against physical-layer key extraction?

Edman

Kiayias²,

Yener

2011

Proceedings of the Fourth European Workshop on System Security

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Physical-layer key extraction techniques attempt to derive a shared symmetric cryptographic key between two wireless devices based on the principle of channel reciprocity, which states that the signal envelope between two communicating devices is strongly correlated. A key security assumption made in previous literature is that the signal envelope observed by an adversary located greater than a half-wavelength away is uncorrelated with that shared between the two communicating devices; however, this assumption has yet to be rigorously evaluated in previous work on physical-layer key extraction. In this paper, we present an experimental analysis that examines the relationship between the channel measurements used to extract a symmetric key between two devices and those observed by one or more distantly located passive adversaries. We find that, contrary to previous assumptions, there does exist a strong correlation in measurements observed by adversaries located significantly greater than a half-wavelength away from two communicating wireless devices. Further, we provide initial results that show the extent to which the adversary is able to leverage such correlations to infer portions of the key extracted between two devices using previously published physical-layer key extraction techniques.

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Key Distribution Protocols Based on Noisy Channels in Presence of an Active Adversary: Conventional and New Versions With Parameter Optimization

Cited by 20 publications

References 25 publications

Principles of Physical Layer Security in Multiuser Wireless Networks: A Survey

Principles of Physical Layer Security in Multiuser Wireless Networks: A Survey

Long term confidentiality: a survey

On passive inference attacks against physical-layer key extraction?

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